package core /* Interops are designed to run under VM's execute() panic protection, so it's OK for them to do things like smth := v.Estack().Pop().Bytes() even though technically Pop() can return a nil pointer. */ import ( "github.com/nspcc-dev/neo-go/pkg/core/fee" "github.com/nspcc-dev/neo-go/pkg/core/interop" "github.com/nspcc-dev/neo-go/pkg/core/interop/contract" "github.com/nspcc-dev/neo-go/pkg/core/interop/crypto" "github.com/nspcc-dev/neo-go/pkg/core/interop/interopnames" "github.com/nspcc-dev/neo-go/pkg/core/interop/iterator" "github.com/nspcc-dev/neo-go/pkg/core/interop/runtime" "github.com/nspcc-dev/neo-go/pkg/core/native" "github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag" "github.com/nspcc-dev/neo-go/pkg/vm" ) // SpawnVM returns a VM with script getter and interop functions set // up for current blockchain. func SpawnVM(ic *interop.Context) *vm.VM { vm := ic.SpawnVM() ic.Functions = [][]interop.Function{systemInterops, neoInterops} return vm } // All lists are sorted, keep 'em this way, please. var systemInterops = []interop.Function{ {Name: interopnames.SystemContractCall, Func: contract.Call, Price: 1 << 15, RequiredFlags: callflag.ReadStates | callflag.AllowCall, ParamCount: 4}, {Name: interopnames.SystemContractCallNative, Func: native.Call, Price: 0, ParamCount: 1}, {Name: interopnames.SystemContractCreateMultisigAccount, Func: contractCreateMultisigAccount, Price: 1 << 8, ParamCount: 2}, {Name: interopnames.SystemContractCreateStandardAccount, Func: contractCreateStandardAccount, Price: 1 << 8, ParamCount: 1}, {Name: interopnames.SystemContractGetCallFlags, Func: contractGetCallFlags, Price: 1 << 10}, {Name: interopnames.SystemContractNativeOnPersist, Func: native.OnPersist, Price: 0, RequiredFlags: callflag.WriteStates}, {Name: interopnames.SystemContractNativePostPersist, Func: native.PostPersist, Price: 0, RequiredFlags: callflag.WriteStates}, {Name: interopnames.SystemIteratorCreate, Func: iterator.Create, Price: 1 << 4, ParamCount: 1}, {Name: interopnames.SystemIteratorNext, Func: iterator.Next, Price: 1 << 15, ParamCount: 1}, {Name: interopnames.SystemIteratorValue, Func: iterator.Value, Price: 1 << 4, ParamCount: 1}, {Name: interopnames.SystemRuntimeCheckWitness, Func: runtime.CheckWitness, Price: 1 << 10, RequiredFlags: callflag.NoneFlag, ParamCount: 1}, {Name: interopnames.SystemRuntimeGasLeft, Func: runtime.GasLeft, Price: 1 << 4}, {Name: interopnames.SystemRuntimeGetCallingScriptHash, Func: runtime.GetCallingScriptHash, Price: 1 << 4}, {Name: interopnames.SystemRuntimeGetEntryScriptHash, Func: runtime.GetEntryScriptHash, Price: 1 << 4}, {Name: interopnames.SystemRuntimeGetExecutingScriptHash, Func: runtime.GetExecutingScriptHash, Price: 1 << 4}, {Name: interopnames.SystemRuntimeGetInvocationCounter, Func: runtime.GetInvocationCounter, Price: 1 << 4}, {Name: interopnames.SystemRuntimeGetNotifications, Func: runtime.GetNotifications, Price: 1 << 8, ParamCount: 1}, {Name: interopnames.SystemRuntimeGetScriptContainer, Func: engineGetScriptContainer, Price: 1 << 3}, {Name: interopnames.SystemRuntimeGetTime, Func: runtime.GetTime, Price: 1 << 3, RequiredFlags: callflag.ReadStates}, {Name: interopnames.SystemRuntimeGetTrigger, Func: runtime.GetTrigger, Price: 1 << 3}, {Name: interopnames.SystemRuntimeLog, Func: runtime.Log, Price: 1 << 15, RequiredFlags: callflag.AllowNotify, ParamCount: 1}, {Name: interopnames.SystemRuntimeNotify, Func: runtime.Notify, Price: 1 << 15, RequiredFlags: callflag.AllowNotify, ParamCount: 2}, {Name: interopnames.SystemRuntimePlatform, Func: runtime.Platform, Price: 1 << 3}, {Name: interopnames.SystemStorageDelete, Func: storageDelete, Price: 0, RequiredFlags: callflag.WriteStates, ParamCount: 2}, {Name: interopnames.SystemStorageFind, Func: storageFind, Price: 1 << 15, RequiredFlags: callflag.ReadStates, ParamCount: 3}, {Name: interopnames.SystemStorageGet, Func: storageGet, Price: 1 << 15, RequiredFlags: callflag.ReadStates, ParamCount: 2}, {Name: interopnames.SystemStorageGetContext, Func: storageGetContext, Price: 1 << 4, RequiredFlags: callflag.ReadStates}, {Name: interopnames.SystemStorageGetReadOnlyContext, Func: storageGetReadOnlyContext, Price: 1 << 4, RequiredFlags: callflag.ReadStates}, {Name: interopnames.SystemStoragePut, Func: storagePut, Price: 0, RequiredFlags: callflag.WriteStates, ParamCount: 3}, // These don't have static price in C# code. {Name: interopnames.SystemStorageAsReadOnly, Func: storageContextAsReadOnly, Price: 1 << 4, RequiredFlags: callflag.ReadStates, ParamCount: 1}, } var neoInterops = []interop.Function{ {Name: interopnames.NeoCryptoCheckMultisig, Func: crypto.ECDSASecp256r1CheckMultisig, Price: 0, ParamCount: 2}, {Name: interopnames.NeoCryptoCheckSig, Func: crypto.ECDSASecp256r1CheckSig, Price: fee.ECDSAVerifyPrice, ParamCount: 2}, } // initIDinInteropsSlice initializes IDs from names in one given // Function slice and then sorts it. func initIDinInteropsSlice(iops []interop.Function) { for i := range iops { iops[i].ID = interopnames.ToID([]byte(iops[i].Name)) } interop.Sort(iops) } // init initializes IDs in the global interop slices. func init() { initIDinInteropsSlice(systemInterops) initIDinInteropsSlice(neoInterops) }